i have a problem with sending messages from APP to arduino trough bluetooth.
Sending from arduino is working and bluetooth connection also.
used a osciloscope to see anything is sending and no signal is coming from the app.
tried Dabble app and then sending functions works. so not a hardware fault or connection problem to my point of view
using the Serial from IDE also that is working.
tried to look at all which was already posted on this and all advice i could find or change i think i already did.
smartphone has android 13 version one ui 5.0
if i missed anything please ask
or did something wrong
if any advice is possible please help
my files are here posted :
buildup_KH_MEASURE-DOSE .TXT.ino (17.5 KB)
KHSMARTDOSER.aia (17.8 KB)